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US 4,059,525 AGranted
Slide filters
OwnerLeonard L. Krasnowinventor
Life of this patent
Estimating the term…
Abstract
A slide filter for filtering plastic stock and other materials having a slide plate movable within a housing, across the path of material flow. The housing contains sealing means to prevent leakage of the material to the outside of the housing. The slide plate includes one or more recesses bounded by wall means within which a mechanical screen or sand pack filter is positioned.
Claims18
A slide filtration apparatus for filtering a fluid material, comprising in combination:
- A. a fluid flow path means having a fluid inlet and a fluid outlet,
- B. guideway means which intersects said flow path means in a substantially perpendicular relationship, said guideway means having inlet and outlet portions on opposite sides of said flow path means, thereby defining an area of flow intersection between said inlet and outlet portions,
- C. a slide plate having at least a front surface and a back surface, said slide plate comprising at least one breaker means formed of bores extending through said front surface to said back surface;
- seal contact means surrounding said at least one breaker means on at least said front surface;
- said seal-contact means comprising substantially flat seal-contacting surfaces spatially displaced from and substantially parallel to said front surface;
- the total area of said seal-contacting surfaces representing a minor fraction relative to the area of said front surface,
- D. seal means positioned within said guideway means;
- said slide plate functioning to be insertable in and through said guideway means and said seal means;
- said guideway means being larger in cross-section than said slide plate, and
- E. seal adjustment means cooperatively functioning with said seal means to adjust said seal means within said guideway means so as to contact at least said front surface of said slide plate exclusively at said seal-contacting surfaces so as to enable said slide plate to be moved with reduced friction through said guideway for substantially continuous filter changing while maintaining substantially unchanged the adjustment of said seal adjustment means.
7 more elements
A slide filtration apparatus for filtering a fluid material, comprising in combination:
- A. a fluid flow path means having a fluid inlet and a fluid outlet,
- B. guideway means which intersects said flow path means in a substantially perpendicular relationship, said guideway means having inlet and outlet portions on opposite sides of said flow path means, thereby defining an area of flow intersection between said inlet and outlet portions,
- C. a slide plate having at least a front surface and a back surface, said slide plate comprising at least one breaker means formed of bores extending through said front surface to said back surface;
- seal contact means surrounding said at least one breaker means on at least said front surface;
- said seal-contact means comprising substantially flat seal-contacting surfaces spatially displaced from and substantially parallel to said front surface;
- the total area of said seal-contacting surfaces representing a minor fraction relative to the area of said front surface,
- D. seal means positioned exclusively within at least one of said inlet portion and said outlet portion of said guideway means;
- said slide plate functioning to be insertable in and through said guideway means and said seal means;
- said guideway means being larger in cross-section than said slide plate, and
- E. seal adjustment means cooperatively functioning with said seal means to adjust said seal means within said at least one portion of said guideway means so as to contact at least said front surface of said slide plate exclusively at said seal-contacting surfaces exclusively within said at least one portion of said guideway means so as to enable said slide plate to be moved with reduced friction through said guideway for substantially continuous filter changing while maintaining substantially unchanged the adjustment of said seal adjustment means.
7 more elements
Dependencies are inferred from the claim text.